Infection, usually by a virus, is the most common cause of lymph node swelling. Other causes include inflammatory diseases, abscesses, and cancer. ... This biopsy is done to find out why a node is swollen. ... Groin; Armpit; Neck; Under the jaw and chin; Behind the ears. ...
Soldering - Soldering has the same definition as brazing except for the fact that the filler metal used has a liquidus below 840Â°F (450Â°C) and below the solidus of the base metals.
Silver brazing, sometimes known as a silver soldering or hard soldering, is brazing using a silver alloy based filler. These silver alloys consist of many different percentages of silver and other metals, such as copper, zinc and cadmium.